Repeatability of Body Fat and Fat-Free Mass Measurements by Bioimpedance and Ultrasound Scanning Analysis in the Group of Young Adults

Abstract

Repeatability of the body fat and fat-free mass measurements obtained by two indirect methods (bioimpedance – BIA and ultrasound scanning analysis – US) was performed in the group of young adults. To evaluate repeatability, the repeated body composition measurements by the bioimpedance analyzer ABC-02 “Medas” and the ultrasound scanner BodyMetrixTM were done in the group of adult males and females. The performed study indicates accuracy of the estimates in the individuals and in the group at all as well as high repeatability of measurements obtained by BIA and US. Positive significant correlation between the body composition measurements obtained by the bioimpedance analyzer ABC-02 “Medas” and the ultrasound scanner BodyMetrixTM as well as between repeated measurements was found. The study indicates high repeatability of body fat and fat-free mass measurements obtained by the bioimpedance analyzer ABC-02 “Medas” and the ultrasound scanner BodyMetrixTM in the group of young adult males and females. Particularly, the highest repeatability was for the fat-free mass measurements.